<template>
	<view>
		<!-- 轮播图 -->
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
			<swiper-item v-for="(item, i) in goodsDetailsData.pics" :key="i">
				<image :src="item.pics_big" @click="preview(i)"></image>
			</swiper-item>
		</swiper>

		<!-- 商品信息区域 -->
		<view class="goods-info-box">
			<!-- 商品价格 -->
			<view class="price" v-if="goodsDetailsData.goods_price">￥{{goodsDetailsData.goods_price}}</view>
			<!-- 信息主体区域 -->
			<view class="goods-info-body">
				<!-- 商品名称 -->
				<view class="goods-name">{{goodsDetailsData.goods_name}}</view>
				<!-- 收藏 -->
				<view class="favi">
					<uni-icons type="star" size="18" color="gray"></uni-icons>
					<text>收藏</text>
				</view>
			</view>
			<!-- 运费 -->
			<view class="yf">快递：免运费</view>
		</view>

		<!-- 商品展示 -->
		<rich-text :nodes="goodsDetailsData.goods_introduce"></rich-text>

		<!-- 商品导航 -->
		<view class="goods_nav">
			<uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick"
				@buttonClick="buttonClick" />
		</view>
	</view>
</template>

<script>
	import {
		mapState,
		mapMutations,
		mapGetters
	} from 'vuex'
	export default {
		data() {
			return {
				goodsDetailsData: {},
				options: [{
					icon: 'shop',
					text: '店铺'
				}, {
					icon: 'cart',
					text: '购物车',
					info: 0
				}],
				buttonGroup: [{
						text: '加入购物车',
						backgroundColor: '#ff0000',
						color: '#fff'
					},
					{
						text: '立即购买',
						backgroundColor: '#ffa200',
						color: '#fff'
					}
				]
			};
		},
		computed: {
			...mapGetters('cart', ['cartTotal']),
		},
		watch: {
			cartTotal: {
				// handler 属性用来定义侦听器的 function 处理函数
				handler(newVal) {
					const findResult = this.options.find(x => x.text === '购物车')
					if (findResult) {
						findResult.info = newVal
					}
				},
				// immediate 属性用来声明此侦听器，是否在页面初次加载完毕后立即调用
				immediate: true
			}
		},
		onLoad(options) {
			// 商品id
			const goodsId = options.goods_id

			this.getGoodsDetails(goodsId)
		},
		methods: {
			...mapMutations('cart', ['addGoods']),
			async getGoodsDetails(goodsId) {
				const {
					data: res
				} = await uni.$http.get('/api/public/v1/goods/detail', {
					goods_id: goodsId
				})

				if (res.meta.status !== 200) return uni.$showMsg()

				res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g,
					'<img style="display: block;"').replace(/webp/g, 'jpg')
				this.goodsDetailsData = res.message
				console.log(this.goodsDetailsData)
			},
			preview(i) {
				uni.previewImage({
					current: i,
					urls: this.goodsDetailsData.pics.map(x => x.pics_big),
					loop: true
				})
			},
			onClick(e) {
				if (e.content.text === '购物车') {
					uni.switchTab({
						url: '/pages/cart/cart'
					})
				}
				console.log(e)
			},
			buttonClick(e) {
				if (e.content.text === '加入购物车') {
					const {
						goods_id,
						goods_name,
						goods_price,
						goods_small_logo
					} = this.goodsDetailsData
					const goodsInfo = {
						// 商品id
						goods_id,
						// 商品名称
						goods_name,
						// 商品价格
						goods_price,
						// 商品数量
						goods_count: 1,
						// 商品图片
						goods_small_logo,
						// 是否勾选状态
						goods_state: true
					}
					this.addGoods(goodsInfo)
				}
			}
		}
	}
</script>

<style lang="scss" scoped>
	swiper {
		height: 750rpx;

		image {
			width: 100%;
			height: 100%;
		}
	}

	// 商品信息区域的样式
	.goods-info-box {
		padding: 10px;
		padding-right: 0;

		.price {
			color: #c00000;
			font-size: 18px;
			margin: 10px 0;
		}

		.goods-info-body {
			display: flex;
			justify-content: space-between;

			.goods-name {
				font-size: 13px;
				padding-right: 10px;
			}

			// 收藏区域
			.favi {
				width: 120px;
				font-size: 12px;
				display: flex;
				flex-direction: column;
				justify-content: center;
				align-items: center;
				border-left: 1px solid #efefef;
				color: gray;
			}
		}

		// 运费
		.yf {
			margin: 10px 0;
			font-size: 12px;
			color: gray;
		}
	}

	.goods_nav {
		position: fixed;
		bottom: 0;
		left: 0;
		width: 100%;
	}
</style>
